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New GSA Bulletin articles published ahead of print in March

Jian Xu; Xiao-Ping Xia; Qiang Wang; Christopher J. Spencer; Bin He .
Abstract:
The mechanisms and processes by which subducted slab interacted with mantle
plume remain controversial, as direct observation of such interaction is
difficult to impossible. Compositional heterogeneity of large igneous
provinces (LIPs) additionally makes plume-slab interaction hard to detect.
Oxygen isotopes are sensitive enough to trace the source of magmas. Here we
provide evidence for plume-slab interaction mainly based on in situ zircon
Hf-O isotope analyses, as well as whole-rock elemental and Sr-Nd-Hf isotope
analyses, on the Late Permian and Early Triassic A-type granites on the
margin of the Emeishan LIP in SW China. These granites show typical A-type ....

Laji Shan , United States , Wassuk Range , Meng Cheng , South China Sea , Brunei General , Missouri Valley , Kai Wang , Feng Wang , Yang Chu , Malta Bend , Yang Wang , Yang Gao , Jammu And Kashmir , Cheng Shi , Nei Mongol , Sheng Wang , Tibetan Plateau , China General , South Dakota , United Kingdom , Qilian Shan , Cerro Bola , Ma Jie , Olympic Mountains , Chen Wu ,

The Arctic Has a Cloud Problem

The Atlantic
Tiny iodine particles are clumping together to trap sunlight and melt polar sea ice.
Christian Vorhofer/ imageBROKER / Alamy
To climate scientists, clouds are powerful, pillowy paradoxes. They can reflect away the sun’s heat but also trap it in the atmosphere; they can be products of warming temperatures but can also amplify their effects. Now, while studying the atmospheric chemistry that produces clouds, researchers have uncovered an unexpectedly potent natural process that seeds their growth. And as the Earth continues to warm from rising levels of greenhouse gases, this process could be a major new mechanism for accelerating the loss of sea ice at the poles one that no global climate model currently incorporates. ....

Intergovernmental Panel On Climate Change , Intergovernmental Panel On Climate , Fifth Assessment Report , Intergovernmental Panel , Climate Change , Climate Scientists , Studies Of Aerosols , Tiny Particles , Global Climate Model , Cloud Chamber , Atmospheric Chemistry , Senior Scientist , Loss Of Sea Ice , Climate Models , Urban Areas , Atmospheric Research , Potent Natural Process , Jasper Kirkby , Andrew Gettelman , Sulfuric Acid , Water Vapor , Major New Mechanism , Arctic Region , Degrees Celsius , Full Climate Impact Of This Mechanism , Ipccs Average Upper Bound ,

Board of Governors of the Federal Reserve System (via Public) / Natural Disasters, Climate Change, and Sovereign Risk

Introduction
Unexpected shocks may tip countries with elevated fiscal vulnerabilities into default. The literature has emphasized the role of macroeconomic and financial shocks, such as a decline of commodity prices (Reinhart et al., 2016) or banking crises (Baltenau and Erce, 2018) in shaping sovereign risk. However, other types of shocks, such as political events or natural disasters, are equally important.
2 Extreme weather events appear especially salient in light of the key role played by natural disasters in recent sovereign default episodes (i.e. Grenada 2004, and Antigua y Barbuda 2004 and 2009), the climate crisis, and the recent emphasis on incorporating natural-disaster risk as a component of macroeconomic risk management. In particular, the increase in the frequency and intensity of natural disasters, has led several economists and policy makers to advocate in favor of adopting disaster clauses that allow for a temporary debt moratorium when countries are hit ....

United States , Dominican Republic , Antigua And Barbuda , Gabriel Mihalache , Juan Carlos , Leonardo Martinez , Hiroyuki Murakami , James Kossin , Gabriel Vecchi , Gyan Bai , Seth Underwood , Christoph Trebesch , Vincent Reinhart , Journal Of International Economics , Federal Reserve Bank , International Finance Discussion Papers , Bank Crises , Climate Change , Sovereign Risk , Simulated Moments , Government Debt , Debt Limits , Welfare Analysis , Deadly Debt Crises , Emerging Markets , Staff Report ,